21997500

素因数分解:

$2^2\times 3^1\times 5^4\times 7^1\times {\mathrm{419}}^1$

素因数の和:453

約数の個数: 120

約数和(自身を含む): 73476480

約数和(自身を除く): 51478980

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 125, 140, 150, 175, 210, 250, 300, 350, 375, 419, 420, 500, 525, 625, 700, 750, 838, 875, 1050, 1250, 1257, 1500, 1676, 1750, 1875, 2095, 2100, 2500, 2514, 2625, 2933, 3500, 3750, 4190, 4375, 5028, 5250, 5866, 6285, 7500, 8380, 8750, 8799, 10475, 10500, 11732, 12570, 13125, 14665, 17500, 17598, 20950, 25140, 26250, 29330, 31425, 35196, 41900, 43995, 52375, 52500, 58660, 62850, 73325, 87990, 104750, 125700, 146650, 157125, 175980, 209500, 219975, 261875, 293300, 314250, 366625, 439950, 523750, 628500, 733250, 785625, 879900, 1047500, 1099875, 1466500, 1571250, 1833125, 2199750, 3142500, 3666250, 4399500, 5499375, 7332500, 10998750, 21997500]

約数ペア:

[(1, 21997500), (2, 10998750), (3, 7332500), (4, 5499375), (5, 4399500), (6, 3666250), (7, 3142500), (10, 2199750), (12, 1833125), (14, 1571250), (15, 1466500), (20, 1099875), (21, 1047500), (25, 879900), (28, 785625), (30, 733250), (35, 628500), (42, 523750), (50, 439950), (60, 366625), (70, 314250), (75, 293300), (84, 261875), (100, 219975), (105, 209500), (125, 175980), (140, 157125), (150, 146650), (175, 125700), (210, 104750), (250, 87990), (300, 73325), (350, 62850), (375, 58660), (419, 52500), (420, 52375), (500, 43995), (525, 41900), (625, 35196), (700, 31425), (750, 29330), (838, 26250), (875, 25140), (1050, 20950), (1250, 17598), (1257, 17500), (1500, 14665), (1676, 13125), (1750, 12570), (1875, 11732), (2095, 10500), (2100, 10475), (2500, 8799), (2514, 8750), (2625, 8380), (2933, 7500), (3500, 6285), (3750, 5866), (4190, 5250), (4375, 5028)]